Ruler



FIG. 1 is a front perspective elevational view of a ruler showing my new shape and design;

FIG. 2 is a front perspective elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a left side elevational view thereof;

FIG. 9 is a right side elevational view thereof; and,

FIG. 10 is a right side elevational view thereof.

The broken line showing of a structural feature is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a ruler, as shown and described. 